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The Optical Property of Core-Shell Nanosensors and Detection of Atrazine Based on Localized Surface Plasmon Resonance (LSPR) Sensing

机译:基于局部表面等离子体共振(LSPR)传感的核壳纳米传感器的光学性质和At去津的检测

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摘要

Three different nanosensors with core-shell structures were fabricated by molecular self-assembly and evaporation techniques. Such closely packed nanoparticles exhibit fine optical properties which are useful for biochemical sensing. The refractive index sensitivity (RIS) of nanosensors was detected by varying the refractive index of the surrounding medium and the decay length of nanosensors was investigated using a layer-by-layer polyelectrolyte multilayer assembly. The results showed that the thickness of the Au shell plays an important role in determining the RIS and the decay length. A system based on localized surface plasmon resonances (LSPR) sensing was constructed in our study. The core-shell nanosensors can detect 10 ng/mL atrazine solutions and are suitable for pesticide residue detection.
机译:通过分子自组装和蒸发技术制备了三种不同的具有核-壳结构的纳米传感器。这种紧密堆积的纳米颗粒表现出良好的光学性质,可用于生物化学传感。通过改变周围介质的折射率来检测纳米传感器的折射率灵敏度(RIS),并使用逐层聚电解质多层组件研究纳米传感器的衰减长度。结果表明,金壳的厚度在确定RIS和衰变长度方面起着重要作用。在我们的研究中,构建了基于局部表面等离子体共振(LSPR)传感的系统。核壳纳米传感器可以检测10 ng / mL的阿特拉津溶液,适用于农药残留检测。

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